( 60 ; 



30. Hip. discoideus, Skkv. 



Oodipoda discoidea, Serv. lli.st. (_>rthop., 724. 



Acridium tuberciilatuui, Pal. JJeauv., Ins., 145, PI. 4, Fig. 1. 



Ilippiscus di.scfiidcus, Stal. lleceiis. Orth., 1, Pil. 

 This is occasionally met with in the extreme southern part of the 

 state, Union county being as far north as I have positive evidence of 

 its being found. 



31. Hip. plioenicopterus, Okkm. 



Locusta apiculata, Harr Cat., 56. 



corallma, Ilarr. Rep., 176. 

 Acridium phoenicopterum, De Ilaan. Bijdr. Kenn. Orth , 144. 

 Oedipoda ph(U'nicoptera, Germ., Burm. Handb. Ent., II, 643, 

 obliterata ? Germ., Burm. Handb. Ent., II, 643. 

 corallina, Erichs. Archiv. f. Nat., IX, 229. 

 Hippiscus phoenicopterus, Scudd. Geol. Surv. N. Hamp. I, 377. 

 Found occasionally in various parts of the state ; but by no means 

 common. 



32. Camnulapellucida, Scudd. 



Oedipoda pellucida, Scudd Bost. Jour. Nat. Hist., VII, 472. 



atrox, Scudd. Geol. Surv. Neb., 253. 

 Camnula tricarinata ? Stal. Ilecens. Orth., I, 120. 



pellucida, Scudd. Geol. Surv. N. Hamp , 1,378. 

 I have never, that 1 am aware of, met with this species in Illinois, 

 but find this locality given by Mr. Scudder in the Geological Survey 

 of New Hampshire. 



Group ACRIDINI. 



33- Pezotettix unicolor, Tiio.s. Syiiop. Acrid., 151. , 



Found in southeri', and probably in central, Illinois. 



34- Fez. minutipennis, sp. hov. 



Female. Head short, eyes approximate above ; the vertex very 

 narrow between them, suddenly expanding to lateral angles just in front 

 tif them, slightly, sometimes scarcely, sulcate Face, seen from the side, 

 oblique and arcuate ; frontal costa somewhat prominent, continuous 

 nearly or quite to the clypeus, sides parallel, not. or but very slightly, 

 .sulcate. Pronotum cylindrical, the median carina distinct, though it 

 is but a very slender line ; lateral carina wholly obliterated ; sides 

 nearly parallel, expanding very slightly posteriorly ; anterior margin 

 squarely truncate ; posterior margin truncate, with a slight notch at 

 the nuddle, son)etimes scarcely distinct; the posterior transverse in- 

 cision is situated much behind the middle, reducing the posterior lobe 

 to but one-third the length of the pronotum; the poterior lateral 

 angle rounded, and the margin from thence up to the middle rounded 



